A kottmann



Aug. 8, 1933.

A. lKOTTMANN CALCULATING MACHINE WITH TWO COUNTING MECHANISMS Filed May20, 1930 4 Sheets-Sheet 1 Aug 8, 1933. A, KOTTMANN 1,921,529

GALCULATING MACHINE WITH TW COUNTING MECHANISMS ug 8, 1933. I A.KOTTMANN 1,921,529

GALCULATING MACHINE WITH TWO COUNTING MECHANISMS Filed May 20, 1930 4Sheets-Sheet 3 Aug. 8, 1933. A. KoTTMANN CALCULATING MACHINE WITH TWOCOUNTING MECHANISMS Filed May 20. 1930 4 Sheets-Sheet 4 n@ INVENTUR:/fafzmanw/ ...1.5% iT/...YS H u Il ..4 ...I I m. h@ -..1 sa@ aww. m..-i.. will @EN w ww .I IIIQIII. .r L lllll hlmw. i.. Wh NW NN mv N m6, mm..QN h IIIIIIIIIHHMUIIUNIINIIHIIMMH EW Il ...i i NI.. i. n N MN PatentedAug. 8, 1933 CALCULATING MACHINE WITH TWO COUNTING MECHANISMS AugustKottmann,

Sommerda,

Germany, as-

signor to Rheinische Metallwaaren und Maschinenfabrik SommerdaAktiengesellschaft,

Sommerda, Germany Application May 20, 1930, Serial No. 454,031, and inGermany May 30, 1929 16 Claims.

The invention relates to calculating machines having two counting orregister mechanisms,

l only one of which is driven by the drive mechanism of the machine,while the second is moved by the first register and takes up onlynumerical values which are transferred therefrom, so that it indicatesthe sums thereof. The invention rel'ates particularly to suchcalculating machinesV wherein both register mechanisms are supported ina register carriage and the transfer of numerical values from oneregister to the other is accomplished in that the number rolls of theAan individual product register, and the other register will be known asthe summation or totalizing register. y

A transfer of numerical values from the individual product register tothe summation product register is to be known simply as a transfer, anda transfer of numerical values, on the other hand, from the summation tothe individual product register will be known as a reverse transfer.

The invention consists in a new structure and arrangement of the tworegisters which is accommodated to the special conditions andrequirements in stepped gear calculating machines and which makes itpossible to arrange both registers upon the customary register carriageof stepped gear roller calculating machines with only a single registermechanism. As a result it becomes possible in stepped gear rollercalculating machines having a single register as well as those havingtwo registers to use the same machine frame without any changeswhatever. carriage also requires only slight changes, so that here alsoonV the whole it is possible to use the sameparts for the carriage witha single register and for the one having two registers.

The 4invention consists essentially in that the totalizing register isarranged upon the upper side.

of the cover plate of the register carriage.

Shafts driven by the number wheels of the product or result register,which in the Ordinary stepped gear roller calculating machines lieperpendicular or approximately perpendicular to the The register,

(Cl. 23S-75) cover plate of the register slide, are somewhat extended atthe ends which are directed toward the cover plate and pass throughbores of the cover plate, so that they project beyond the upper side ofthe cover plate. Bevel gears are secured upon these ends of the shaftswhich project beyond the cover plate, said bevel gears thus lying abovethe cover plate. Double bevel gears which serve as reverse gears may bebrought into mesh with these bevel gears, which are arranged shiftably,but non-rotatably, upon the extended shafts of the number rolls of thetotalizer register.

The bevel gears of the register gearing mentioned, in their middleposition are not in mesh with one another, and are brought into meshwith one another only upon actuating the transfer element.

An embodiment of the invention is represented in the drawings, in which,

Figure 1 is a diagrammatic plan of a calculating machine according tothe invention.

Fig. 2 is a broken away, partially sectioned elevation of the machine.

Fig. 3 is a partially sectioned elevation, showing the means forpreventing an unintentional change of position of the number of wheelswhen the accumulating counting mechanism is stationary.

Figs. 4 and 5 are detail views.

Fig. 6 is a plan of the counter mechanism.

Fig. '7 is a side View of Fig. 6. l

Figs. 8a to 8c and 9a to 9d are detail views oi 9 the reversible drivingmechanism.

Fig. l0 is a partial plan of the mechanism for transferring the productfrom the product number mechanism into the accumulating numbermechanism.

Fig. 11 is a side elevation of the mechanism gf Fig. 1o.

. Fig. 12 is a partially sectioned detail view showing the mechanism forthrowing out the latch levers, and

Fig. 13 is a detail elevation of the throw-out mechanisms with theircoupling devices.

The calculating machine, Fig. 1, consists of the base frame 1, thekeyboard 2, and the countermechanism carriage 3, which carries the prod-105 uct number mechanism 4, the rotary number mechanism 5, and theaccumulating or totalizing number mechanism 6. A slide 60, actuated byYthe knob 7, Figs. 2, 3; 10, 11, and which is moved back and forth thelength of the slot 7a over 110 the entire width Aof thecounter-mechanisms 4 and 6, serves to transfer the individual productsfrom the product number mechanism 4 into the accumulating numbermechanism 6. By throwing over the lever 8, either additive orsubtractive transfer of the product is prepared for. The throw-out knob9 belongs to the accumulating number mechanism, the knob 10 to therotary number mechanism and the knob 11 to the product number mechanism.The latter is driven in the usual way by thestepped tooth rollers, notshown, through the double bevel gear 12, Fig. 2. With the main drivecrank in its initial position, said gear 12 is out of mesh with thebevel gear 13, but it comes into mesh with the latter as soon as saidcrank is moved from its initial position. The transfer of products fromthe mechanism 4 to the accumulating mechanism 6 always takes place whenthe drive is not operating, that is when bevel gears 12 and 13 are outof mesh.

The zero position of the number wheels `25 of the product counter 4results from the zero setting gears 24, in which engages the zerosetting` bar 26, moved by throw-out 11 through the link 106, Figs. 10,11 and 13.

The tens transfer into the product number mechanism takes place in theusual manner. On the shafts 18 of the bevel gears 18, which drive thenumber wheels 25 through the bevel gears 17, 22, and through the shafts23, are carried the get ready lugs 14, which move the levers 15 andthereby displace the tens control gears 16, so that they come intoengagement with the tens control cams of the stepped tooth rollershafts.

The shafts 18 of the bevel gears 13, which are journaled in the plate 20of the countermechanism and in the U-shaped rib 19, carry, in additionto the gears 13, 17 and the tens get ready teeth 14, the bevel gears 21above the plate 20.

The accumulating mechanism 6 is composed of the numeral wheels 47. Totransfer number values into or from the accumulating mechanism, thedouble bevel gears 45 are brought into mesh with the bevel gears 21.Gears 45 are carried on square shafts 46, which are also the shafts ofthe numeral wheels 47, and which carry the zero setting dog 48, aswellas the tens control gears 49. In the dog 48 engages the throw-out bar50, moved by the throw-out 9.

The numeral wheels 47 of the accumulating number mechanism 6 carry tensget ready lugs 51. When said wheels are turned from 0 to 9 or from 9 to0, these lugs 51 move the tens get ready slides 52 to the right in Fig.2. The slides 52 carry upstanding projections 54, provided with inclinedsurfaces 54a and are held in the right and left end positions by latchlevers 53, Fig. 3.

The slide 60, causing the transfer of the products and moved by means ofhandle 7, Figs. 2 and 3, slides on the rails on the Wall 72. A spring,contained in the casing 65, pulls the slide 60 to the left in Fig. 6 bya cord, wound on the roller 64 and secured to a shoulder 62 of the slide60. The shoulder 62 encounters, when the slide 60 is moved tothe rightand shortly after it leaves its initial position, the slide 87 of thelever 84 and swings the latter to the right, whereby it brings thedriving gears 2l, 45 into mesh, as will be described later on. The slide60 then moves freely past the numeral wheels of the accumulating numbermechanism 6 and finally strikes, just before the end of its travel,against the slide 105, also guided on the rails 70, Fig. 10, the slide105 being connected by the link 108 to the yoke 100 manege of thethrow-out 11, Fig. 13. Since theslide 60 moves the slide 105, it alsoswings the throw-out 11, thereby sets the product mechanism to Zero and,in consequence of the engagement of the gears 21, 45, causes thetransfer of the product into the accumulating mechanism 6. After thezero setting, slides 60 and 105 are moved still further to the right,whereby throw-out 11 is given an additional displacement, and the gears2l, 45 are again disengaged, as will be later described. On a pin 59 ofslide 60 is mounted a swinging lever 56, Figs. 10 and 11, which carriesthe laterally projecting tens control cams 57, 58, as well as theupwardly directed projection 116 and the downwardly extending projection55. Lever 56 is normally held by spring 56a with its bent end, carryingprojection 55, -against slide 60. The latter carries on its right end aprojection 61, the purpose of which will be later explained.

After the transfer of the product and after the redisengagement of thedriving gears 21, 45 b v the movement of the slide 60 to the right, saidslide is returned to its initial position by the pull of the spring incasing 65. In its return travel, it slides past all the numeral wheels47 of the accumulating mechanism. Now in whatever places of the latter,tens transmissions have been made ready in the transfer of the product,that is, the tens get ready slides 52 have been displaced, theirprojections 54, provided with inclines 54a. come into the path of thedownwardly directed projections 55 of the swinging lever 56, so that thelatter is pressed against the tens control gears 49 in consequence ofthe movement of quently, in all the ready places of the countingmechanism, the tens transfer. Projectionl on slide 60 again displacesthe prepared tens get ready slides back into their inoperative position.

The bar 70, on which the slide 60 slides. is

guided in curved slots 73, Fig. 7, in the wall 72.

, When the lever 8 is thrown over for subtraction (i. e.. forsubtractive transfer of the product) the bar 70 is moved somewhat to theright in Fig. 7 byv the pin 75 of lever 8 and is raised somewhat by thecurved slots 73, thereby also raising the slide 60 and the lever 56,whereby, instead of the tens conytrol cams 57, the tens control cams 58engage in the tens control gears of the numeral wheels 47 of theintermediate counter-mechanism. Said rollers are, therefore, now turnedin the opposite direction by the tens transfer.

A pin 70a of the bar 70 engages in a fork of the connecting arm 77a,Fig. 6, on longitudinal bar 77 and displaces the same to the right forsubtraction, when the lever 8 is thrown over.

The bar 78, lying under bar '77, displaces the double bevel gears 45,thereby bringing the bevel gears 21, 45 of the drive into or out ofengagement. Both bars 77 and 78 are carried and guided by the supportingpins 79.

The bar 77 is movable on said pins in two cam slots 80, Fig. 8a, and thebar 78 in the cam slots 83 with straight portions 83a and 83h, Fig. 8b.The pin 81 of bar 77 engages in a cam slot 82, Fig. 8b, of the bar 78,which, as shown in Fig. 8c, is composed of three portions 82a, B2b and82o.

Part 82a is of the same shape as part 83a, and part 82h as 835. The part82 merely forms a conner'tion between the cam parts 82a and 82h. The camslot 80 of bar 77 is a reflected image of the laterally joined cam slotsections 82a and 82o of the cam 82. When lever 8 is set for addition,the relative position of the two bars 77 and 78 is that represented inFig. 9a. Movement of bar 78 to the right then causes the cam 82 (portion82h) to move the bar 78 slightly downwardly on pin 81,

. as represented in Fig. 9b. Pin 79 slides then in portion 8b. Thedouble bevel gears 45 are brought, by this displacement of bar 78, intomesh with bevel gears 21, Fig. 2, as is required for additive transferinto the accumulating number mechanism.

By throwing over lever 8 for subtraction, bar 78 moves in cam slot 80 onthe pin 79 to the right. Pin 81 slides (in consequence of the reflectedimage form of the cams 80 and 82a-1-82c) along the cam 82 up to itsright end, Fig. 9c. If now the bar 78 is moved to the right, Fig. 9d,pin 8l and cam 82 (section 82a) force it downwardly, instead of upwardlyas before. Pin 79 then slides in slot part 83a. Gears 45 now come intomesh with gears 21, as required for subtractive transfer.

Bar 78, Fig. 6, is connected with lever 84 by slot '85 and pin 86. Lever84 is swung by shoulder 62 when slide 60 is moved and so moves bar 78that the gears 21, are put in mesh. Slide 87 on the end of lever 84, inthe return movement of the slide 60, causes shoulder 62 to come againbehind the lever 84.

The bar 78, when it is moved to the right, engages by its downwardlybent end 88 behind the nose 89 of the spring-pressed pawl 90, which ispivoted with the pin 91 on the holder 98. On the latter is also guided aslide 93, Fig. 6, with rightangularly bent end 93a. In the transfer of aproduct and the corresponding zero setting of the product numbermechanism, the throw-out l1, which is additionally swung after the Zerosetting has taken place, strikes against the bent end of the slide 93and moves it slightly to the right. At the same time, the pawl 90 isslightly swung by the pin 94 and the rail 78 is released. Only after thezero setting and transfer are completed consequently, are the -reversingdrivingl gears disen gaged.

To transfer back a sum, obtained in the accumulating number mechanism,into the product number mechanism, the transmission slide is first movedslightly from its initial position, but no further than is necessary tojust swing the lever 84 and to move the bar 78 and therebyto engage thegears 21, 45. Then the accumulating mechanism 6 is brought to zero bythe throwout 9, whereby the numeral wheels of the product mechanismadjust themselves. Throw-out 9, after the zero setting, moves anadditional amount, in doing which it strikes against slide 93 by meansof lever 95, Fig. 6, thereby again disengaging the gears 21, 45. If,before the return transfer into the prodm uct countermechanism, a numbervalue has already been obtained and if, during the return transfer thenumeral wheels have been turned in 'numeral wheels 47 are securedagainst unintentional movement by latch levers 115, Fig. 3., whichengage with stop pins 115a in the tens control gears 49. Said levers 115must be first disengaged when the wheels 47 are to be turned. To thisend, they are formed as bell-crank levers, the free arms of which restagainst pins of a longitudinally slidable pin-rail 117, the left end ofwhich lies in the path of movement of the lever 84, which, through thebar 78, engages the gears 21, 45 and is, consequently, always displacedwhen said lever is swung to the left and bar 78 thereby moved, and gears21, 45 are in mesh, i. e., always for the transfer or return transfer.After the release of bar 78, it is returned to normal position by thespring 84a of levei` 84, and similarly, springs 1155 return latchlevers. 115 and the pin-rail 117 to their initial positions.

In order that the latch levers may also be disengaged. when only theaccumulating mechanism is out of operation (without transfer), anglelever 118 is provided, which is pivoted at 119 and has one of its armsin the path of movement of the throw-out 9, while its other arm 120engages behind the bent right end of the pin-rail 117.

In the tens transfer into the accumulating mechanism, the latch levers115 of the numeral wheels to be turned are disengaged by the projection116 of the lever 56 carrying the tens control cams. Therefore, if thelever 56 is forced by the inclined surface 54a of a tens get ready slide52, which is in ready position, towards the tens control gears 49 andthe latch levers 115, as shown in Fig. 3, then the nose 116 engages theincline 115c of the lever 115 of the next higher place and therebybrings the pin 115a out of engagement with the tens control gears 49. Atthe same time, one of the cams 57 or 58 en gages in the gear 49. Afterthe slide has turned the gear 49 through one step, the lever 56 snapsoff the nose 54 of the tens get ready slide 52. Latch pin e then entersthe next tooth space of the gear 49.

The numeral wheels 27, Fig. 2, of therotary number mechanism, are drivenin the usual way by means of gears 28, 30 and 32 and shaft 33 from asingle tooth, not shown, carried by a shaft running synchronously withthe stepped tooth rollers. 'Ihe zero setting of the rotary numbermechanism is performed by the zero setting pinion 35, in which the bar36, moved by throw-out 10 through link 107, Fig. 13, engages.

1n the zero setting of the product mechanism and in the transfer ofproducts into the accumu lating mechanism, the rotary number mechanismmust usually also be set at zero. The zero setting of the rotarymechanism may take place equally Well at the same time as the zerosetting or as the transfer of the product, since a device, coupling thethrow-out 10 of the rotary mechanism with the throw-out 11 of theproduct mechanism, is provided. This device is shown in Figs. 12 and 18.

To the yoke 100, which is swung about the shaft 101 by the throw-outknob l1 of the product mechanism, is secured an angleiron 108, on whichmoves a slide 109, held in its end positions by pawl 110. In its upperposition, slide 109 takes with it the throw-out 10 of the rotarymechanism on angle-iron 111.

The manipulation and mode of operation of the machine in additivetransfer of a product.

obtained in mechanism 4, into the accumulating mechanism 6, is asfollows:

Lever 8 is set for addition, whereby rail 70 is brought into its lowerposition, Fig. 7, by cam slots 73, so that only the upper tens controlcam 57 of lever 56 comes into action. Rail 77 is moved with rail 'zo bythe armA 77a, so that its pin si stands in portion 82h of cam slot 82.Then the transfer slide is moved to the right by knob 7,`

until the slot 7a. limits its further movement, and it is then released,and returned to the left by the spring in casing 65.

During the first part of its travel, slide 60 swings lever 84 by itsshoulder 62, thereby moving pin-rail 117, Fig. 3, and bar 78, Fig. 6, tothe right. Pawl 90 locks the two rails or bars 117 and 78, in theirright-hand end positions. By the displacement of said bars, latch levers11.5 are thrown out and the gears 2l, 45 are engaged for additivetransfer. Towards the end of its travel, slide 60 strikes with itsright-hand end against the slide 105, Fig. l2, which moves, through link103, the yoke 100 of the throw-out 1l of the product counter. The latteris, therefore, set to Zero, and, in consequence of the engagement ofgears 21, 45, the numeral wheels 47 of the accumulating counter areturned through the same angle in order that the numeral wheels 25 of theproduct counter may be'brought to zero. After this zero setting and thetransfer have taken place, the throw-out 1l is swung slightly further tothe right, whereby the yoke 100, Fig. 1l, moves the slide 93 by theshoulder 93a slightly to the right, so that the pawl is disengaged andthe bars 117 and 78 are returnedto the left by spring 84a of lever 84and. springs 115D of latch levers 115. The driving gears 21, 45 are,therefore, again disconnected and the latch levers 115 are again inengagement. If, in the transfer of the product, in any places of theaccumulating counter, the numeral wheels 47 are turned from 9 to 0,'then the tens get ready nose 51 has brought the corresponding tens getready slide 52 into ready position.

In the return of the transfer slide 60 by the spring inthe casing 65,the projections 54 of the ready slides 52, force, by their inclines 54C,

the lever 56 of the moving slide 60, Figs. 2 and 3, against the latchlevers 115 and thetens control gears 49. In consequence of this,projection 116 of lever 56 encounters the inclines 115e of the latchlever 115 of the next higher place of the counter and, therefore,disengages the stoppin 115a from the tens control gear 49. At the sametime, due to this movement of lever 56, the tens control cam 57 engagesa tooth space of the tens control gear 49 of the same place, so that theslide 60, moving to the left, takes said gear with it at the beginning.After the tens control gear 49 is turned through one tooth, the lever 56snaps off the nose 54 of the get ready lever 52 -and is returned tonormal position by spring 56a, Fig. 10. Latch lever 115, therefore,swings back and engages the stop pin 115a in the next tooth space of thegear 49, while the tens control cam isdisengaged.

In subtractive transfer, the operations are substantially the same, butthe pin 81 of bar 77, Figs. 9c and 9d, in consequence of the oppositeposition of lever 8, engages in slot 82a, Fig. 8c, instead of in `slot82h, as before. Bar 70 is in its upper position. The gears 21, 45, aretherefore, engaged for subtractive transfer and tens control cam 58 nowcomes 'into operation instead of cam 57. i

If the rotary counter is to be set to zero simultaneously with thetransfer, the product throwout "11 is coupled with a rotary throw-out 10by means of slide 109, Fig. 13.

In the return transfer f product sums from the accumulating counter intothe product counter, the manipulation and mode of as follows:

First the lever 8 is again set for addition or subtraction. The effectof this has already been described. Then the transfer slide is moved byhandle 7 so far to the right as is necessary toV swing lever 84 and tomove slides 78 and 117, as well as engage gears 21, 45 and disengagelatch lever 115. Also by moving the accumulating throw-out 9 to theright, the accumulating counter is disconnected, whereby the numeralwheels of the product counter are turned, in consequence of theengagement of said gears 21, 45, through the same distance, as thenumeral wheels. of the accumulating counter are turned 91) in the zeroposition. After the throwing out of f the accumulating counter, itsthrow-out 9 continues to move and strikes through the lever 95, swung byit, against the end of the slide 93, whereby the gears 21, 45 are againdisengaged and the latch levers are again thrown in. This completes thereturn transfer.

To set the accumulating counter to zero with return transfer, thethrow-out 9 is moved to the right. It first swings the bell-crank lever118, thereby moving bar 117 so that the latch levers 115 are disengaged.Only now is the zero setting performed. v

I claim as my invention:-

1. A calculating machine comprising a carriage having a cover plate, tworegistering mechanisms having numeral wheels supported on said carrier,one of which registers the separate products and the other registers thesums of said products, and transfer mechanism whereby the transfer ofthe separate products from the first-mentioned mechanism into thesecond-mentioned mechanism is accomplished by setting thefirst-mentioned mechanism to Zero, reversing gears arranged between thecorresponding numeral 115 wheels of said two mechanisms, and means toshift said gears, said gears being so arranged that by suitably shiftingthem the separate products can be transferred into said second-mentionedmechanism either additively or subtrac- 120 tively, said sum registeringmechanism being arranged above the said cover plate.

2. A calculating machine as in claim 41, Wherein the transfer mechanismincludes shafts extending perpendicular to the cover plate of theregister carriage and driven from the number Wheels of the productregister, passing through the said cover plate and provided with bevelgears lying above the said cover plate and double bevel gears with whichthey may be brought into engagement, said double bevel gears acting asreverse mechanism, and being arranged to be longitudinally shiftable butnon-rotatable upon the extended shafts of the number wheels of the sumregistering means.

3. A- calculating machine comprising a carriage having a cover plate,two registering mechanisms having numeral wheels supported on saidcarriage, one of which registers the separate products and the otherregisters the sums of said products, and transfer mechanism whereby thetransfer of the separate products from the first-mentioned mechanisminto the secondmentioned mechanism is accomplished by setting therst-mentioned mechanism to zero, including reversing gears arrangedbetween the corresponding numeral wheels of said two mechanisms, meansto shift said gears, said gears being so arranged that by suitablyshifting them 150 operation are iso the separate'products can betransferred into said second-mentioned mechanism either additively orsubtractively, said' sum registering mechanism being arranged. above thesaid cover plate, shafts driven by the number wheels of the productregister and extending perpendicular to and through the cover plate ofthe carriage, bevel gears lying above said cover plate, said reversinggears acting as reverse mechanism and being arranged to belongitudinally shiftable but non-rotatable upon the shafts of the numberwheels of the sum registering means which are extended for this purpose,the gears of the reverse mechanism being normally out of mesh with oneanother, so that the product register is disconnected from the sumregister, and a means whereby said gears are brought into mesh by thetransfer mechanism at the beginning of its movement.

4. Calculating machine as in claim 1, having tens transfer mechanism inthe sum registering mechanism and including tens transfer fingersswingably arranged upon the transfer means, and a tens preparing slide,whereby the tens transfer is accomplished by means of said transferfingers which are brought into readiness for bringing the said slideinto action as required.

5. A calculating machine comprising a carriage having a cover plate, tworegistering mechanisms having numeral wheels supported on said carriage,one of which registers the separate products, and the other registersthe sums of said products, and transfer mechanism whereby the transferof the separate products from the firstmentioned mechanism into thesecond-mentioned mechanism is accomplished by setting the firstmentionedmechanism to Zero, including reversing gears arranged between thecorresponding numeral wheels of said two mechanisms, means to shift saidgears, said gears being so arranged that by suitably shifting them theseparate products can be transferred into said second-mentionedmechanism either additively or subtractively, said sum registeringmechanism being arranged above the said cover plate, having tenstransfer mechanism in the sum registering mechanism and including twotens transfer fingers swingably arranged upon the said transfer means,and a tens preparing slide, whereby the tens transfer is accomplished bymeans of said transfer fingers which are brought into readiness forbringing the said slide into action as required, one of said tenstransfer fingers being active only upon additive transfer and the otheronly upon subtractive transfer.

6. A calculating machine comprising a carriage having a cover plate, tworegistering mechanisms having numeral wheels supported on said carrage,one of which registers the separate products and the other registers thesums of said` products, and transfer mechanism whereby the transfer ofthe separate products from the rstmentioned mechanism into thesecond-mentioned mechanism is accomplished by setting thefirst-mentioned mechanism to Zero, including reversing gears arrangedbetween the corresponding numeral wheels of said two mechanisms, meansto shift said gears, said gears being so arranged that by suitablyshifting them the separate products can be transferred into saidsecond-mentioned mechanism either additiveiy or subtractively, said sumregistering mechanism being arranged above the said cover plate, shaftsdriven by the number wheels of the product register and extendingperpendicular to and through the cover plate of the carriage, bevelgears lying above said/cover plate, said reversing gears acting asreverse mechanism and being arranged to be longitudinally shiftable butnon-rotatable upon the shafts of the number wheels of the sumregistering means which are extended for this purpose, the gears of thereverse mechanism being normally out of mesh with one another, so thatthe product register is disconnected from the sum register, and a meanswhereby said gears are brought into mesh by the transfer mechanism atthe beginning of its movement, including also two cam gear devices,whereby the engaging of the reverse gearing is prepared for additive orsubtractive transfer by selectively actuating one of said two cam geardevices, one of which engages the actuating device for the transferelement for additive transfer and the other for subtractive transfer,tens shifting fin gers, and shifting means which causes one of said camgear devices to become active and simultaneously also causes one oranother of the tens shifting fingers to become active.

7. Calculating machine in accordance with claim 3 including also arectilinearly reciprocating transfer slide whereby the clearing andtransfer of the products takes place, wherein this transfer slide uponthe forward motion and shortly after leaving the starting position,causes the reverse gears to mesh, whereby the number wheels of bothregisters are connected together in pairs.

8. Calculating machine in accordance with claim 3, including also arectilinearly reciprocating transfer slide whereby the clearing andtransfer of the products takes place, wherein this transfer slide uponthe forward motion and shortly after leaving the starting positioncauses the reverse gears to mesh, whereby the number wheels of bothregisters are connected together in pairs, wherein said transfer slideupon the forward motion and after the engaging of the reverse gears,first in inactive operation, slides past all the number wheels of theregisters and only shortly before the end of its stroke produces thezero setting of the product register and thereby the transfer of theproduct.

9. Calculating machine in accordance with claim 3, including also arectilinearly reciprocating transfer slide whereby the clearing andtransfer of the products takes place, wherein this transfer slide uponthe forward motion and shortly after leaving the starting positioncauses the reverse gears to mesh, whereby the number wheels of bothregisters are connected together in pairs, wherein said transfer slideupon the forward motion and after the engaging Yof the reverse gears,first in inactive operation slides past all the number wheels of theregisters and only shortly before the end of its stroke produces thezero setting of the product register and there'- by the transfer of theproduct, wherein the zero setting mechanism of the product register towhich the transfer slide gives an excessive stroke, during thisexcessive stroke moves a device, which again disengages the reversegears between the product register and the sum register.

10. Calculating machine in accordance with claim 3, including also arectilinearly reciprocating transfer slide whereby the clearing andtransfer of the products takes place, wherein this transfer slide uponthe forward motion and shortly after leaving the starting positioncauses the reverse gears to mesh, whereby the number wheels of bothregisters are connected together in pairs, wherein said transfer slideupon the forward motion and after the engaging of the. reverse gears,iirst in inactive operation slides past all the number wheels of theregisters and only shortly before the end of its stroke produces thezero setting of the product register and thereby the transfer of theproduct, wherein the zero setting mechanism of the product register towhich the transfer slide gives an excessive stroke,

'during this excessive stroke moves a device,

fer of the products takes place, wherein this transfer slide upon theforward motion and shortly after leaving the starting position, causesthe reverse gears to mesh, whereby the number wheels of bothr registersare connected together in pairs, the return movement'of the transferslide being produced by means of a spring whichis tensioned in theforward movement.

12. Calculating machine as in'claim 1, wherein when the machine is atrest the number wheels of the registers are latched by locking levers,'which are disengaged upon transfer, reverse transfer, and tenstransfer, and wherein in order to disengage the locking levers thelatter are constructed as angle levers which abut with their free armsagainst pins on a common longitudinally shiftable pin bar so that uponsui/table shifting of this bar all the locking levers will bedisengaged.

13. Calculating machine as in claim 1, wherein when the machine is atrest the number wheels of t the registers are latched by locking levers,which are disengaged upon transfer, reverse transfer, and tens transfer,and wherein in order to disengage the locking levers the latter areconstructed as angle Ilevers which abut with `their free arms againstpins on a common longitudinally shiftable pin bar so that upon suitableshifting of this bar all the locking levers will be diseningrese gaged,and wherein the pin bar together with the bar which shifts the reversegears is so shifted that the locking levers are always disengaged whenthe reverse gears are in mesh. I

14. Calculating machine as in claim 1, wherein when the machine is atrest the number Wheels of the registers are latched by locking levers,which are disengaged upon transfer, reverse transfer, and tens transfer,and wherein in order to disengage the locking levers the latter areconstructed as angle levers which abut. with their free arms againstpins on a common longitudinally shiftable pin bar so that upon suitableshifting of this bar all the locking levers will be disengaged andwherein the zero setting device of the sum register executes apreliminary stroke, and during this preliminary stroke shifts the pinbar in such manner that the locking levers become disengaged upon thezero setting.

15. Calculating machine as in claim 1, wherein when the machine is atrest the number wheels vof the registers are latched by locking levers,

which are disengaged upon transfer, reverse transfer, and tens transfer,and where in order to disengage the locking levers the latter areconstructed as angle levers which abut with their free arms against pinson a common longitudinally shiftable pin bar so that upon suitableshifting of this bar all the locking levers will be disengaged andwherein during the tens transfer only those looking levers of the numberwheels are disengaged, at which, at that time, the tens transfer istaking place.

r I6. Calculating machine as in claim 1, wherein when the machine is atrest the number Wheels of the registers are latched by locking levers,

which are disengaged upon transfer, reverse' transfer, 'and tenstransfer, and wherein in order to disengage the locking levers thelatter are constructed as langle levers which abut with their free armsagainst pins on a common longitudinally shiftable pin bar so that uponsuitable shifting of this bar all the locking levers will be disengagedand wherein during the tens transfer only those locking levers of thenumber wheels are disengaged, at which, at thatl time, the tens transferis taking place and wherein the oscillating lever carrying the tensshifting fingers brings the locking lever out of engagement with thenumber wheel moved thereby.

AUGUST KOTIMANN.

